MPD: thread/Mutex.hxx Source File

MPD 0.20.15

Mutex.hxx
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1 /*
2 * Copyright (C) 2009-2016 Max Kellermann <max.kellermann@gmail.com>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20 * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
27 * OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef THREAD_MUTEX_HXX
31 #define THREAD_MUTEX_HXX
32
33 #include <mutex>
34
35 #ifdef _WIN32
36
37 #include "CriticalSection.hxx"
38 class Mutex : public CriticalSection {};
39
40 #else
41
42 #include "PosixMutex.hxx"
43 class Mutex : public PosixMutex {};
44
45 #endif
46
51 class ScopeUnlock {
52 Mutex &mutex;
53
54 public:
55 explicit ScopeUnlock(Mutex &_mutex):mutex(_mutex) {
56 mutex.unlock();
57 };
58
59 ~ScopeUnlock() {
60 mutex.lock();
61 }
62
63 ScopeUnlock(const ScopeUnlock &other) = delete;
64 ScopeUnlock &operator=(const ScopeUnlock &other) = delete;
65 };
66
67 #endif
ScopeUnlock::operator=
ScopeUnlock & operator=(const ScopeUnlock &other)=delete
ScopeUnlock::~ScopeUnlock
~ScopeUnlock()
Definition: Mutex.hxx:59
PosixMutex
Low-level wrapper for a pthread_mutex_t.
Definition: PosixMutex.hxx:38
PosixMutex.hxx
Mutex
Definition: Mutex.hxx:43
ScopeUnlock
Within the scope of an instance, this class will keep a Mutex unlocked.
Definition: Mutex.hxx:51
CriticalSection
Wrapper for a CRITICAL_SECTION, backend for the Mutex class.
Definition: CriticalSection.hxx:38
PosixMutex::unlock
void unlock()
Definition: PosixMutex.hxx:71
ScopeUnlock::ScopeUnlock
ScopeUnlock(Mutex &_mutex)
Definition: Mutex.hxx:55
PosixMutex::lock
void lock()
Definition: PosixMutex.hxx:63
CriticalSection.hxx